Investment Securities (Significant Unobservable Inputs) (Details) (USD $)						12 Months Ended
	Dec. 31, 2013 Investment	Dec. 31, 2013 Standard & Poor's, AA+ Rating [Member] Agency CMBS Broker Pricing		Dec. 31, 2013 Standard Poors NR Rating [Member] Redeemable preferred stocks Discounted cash flows		Dec. 31, 2013 Standard Poors NR Rating [Member] Redeemable preferred stocks Discount Yield	Dec. 31, 2012 Standard Poors NR Rating [Member] Redeemable preferred stocks Multiple of GAAP book value	Dec. 31, 2013 Standard Poors NR Rating [Member] Private equity funds Multiple of GAAP book value		Dec. 31, 2013 Standard Poors NR Rating [Member] Private equity funds Market Approach Valuation Technique [Member]		Dec. 31, 2013 Standard Poors NR Rating [Member] Private equity securities Market Approach Valuation Technique [Member]
Quantitative information for Level 3 Fair Value Measurements Assets
Fair value Assets		$ 22,000,000	[1],[2]	$ 71,000,000	[2]			$ 35,600,000	[2]	$ 10,500,000	[2]	$ 6,100,000	[2]
Share Price of Recent Transaction Used As Unobservable Input												6.1
Average Share Price Used As Unobservable Input										$ 1.10
Book Value Multiple to Calculate Fair Value							100.00%
Discount Yield (as a percent)						7.40%
Number of Investments with Significant Unobseravble Inputs	1

[1] As of December 31, 2013 each asset type consists of one security.

[2] Credit ratings are assigned based on the following hierarchy: 1) Standard & Poor’s and 2) Moody’s.